Proceedings ArticleDOI
Fault position relay based on current travelling waves and wavelets
Dong Xinzhou,Ge Yaozhong,Xu Bingyin +2 more
- Vol. 3, pp 1997-2004
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TLDR
In this article, a fault position relay based on current travelling waves and wavelets theory is designed, which is mainly based on wavelet theory and modulus maxima of the wavelet transform.Abstract:
The current travelling wave is utilized to detect the fault position in the transmission lines in this paper. How to identify the incident travelling waves and reflected ones from the fault point when noises exist is discussed and resolved. A fault position relay based on current travelling waves and wavelets theory is designed. The relay's principle is mainly on wavelet theory and modulus maxima of the wavelet transform. By analyzing the distribution of the modulus maxima, different components in the current travelling waves can be distinguished and then the incident and reflected travelling waves are identified and finally useless components are filtered. The incident and reflected travelling wave's time difference arrival time difference indicates the fault position. An EMTP simulation example is illustrated. The relay is been proved correct and effective.read more
Citations
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Journal ArticleDOI
Hybrid Fault Diagnosis Scheme Implementation for Power Distribution Systems Automation
TL;DR: In this article, the authors proposed a novel fault diagnosis scheme for power distribution systems, composed by three different processes: fault detection and classification, fault location, and fault section determination.
Proceedings ArticleDOI
High-speed fault identification and protection for HVDC line using wavelet technique
TL;DR: In this article, a new high-speed HVDC line protection using wavelet technique is described, based on the representation of the travelling waves through wavelet modulus maxima.
Journal ArticleDOI
Surge impedance relay
TL;DR: In this article, a surge impedance relay (SIR) was proposed for transmission line protection, which determines fault direction by the ratio of initial voltage and current travelling waves under multiple frequency bands.
Proceedings ArticleDOI
Wavelet Transform Approach for Detection and Location of Faults in HVDC System
TL;DR: Simulation results show that the application of wavelet technique leads to a more reliable solution for recognition of faults and provides a good basis for the new protection scheme for the HVDC lines.
Power transmission line fault location based on current traveling waves
TL;DR: An optimization method has been developed to select the best wavelet candidate from several mother wavelets, which will allow utilities to accurately locate line faults the knowledge of transient current signals, network topology, and the shortest-path algorithm.
References
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Journal ArticleDOI
Singularity detection and processing with wavelets
Stéphane Mallat,Wen-Liang Hwang +1 more
TL;DR: It is proven that the local maxima of the wavelet transform modulus detect the locations of irregular structures and provide numerical procedures to compute their Lipschitz exponents.
Journal ArticleDOI
Painless nonorthogonal expansions
TL;DR: In a Hilbert space H, discrete families of vectors {hj} with the property that f = ∑j〈hj ǫ à à hj à f à for every f in H are considered.
Journal ArticleDOI
Fault location using wavelets
F.H. Magnago,Ali Abur +1 more
TL;DR: In this article, the use of wavelet transforms for analyzing power system fault transients in order to determine the fault location is described, which is related to the travel time of the signals which are already decomposed into their modal components.
Journal ArticleDOI
Wavelets: a new tool for the resonant grounded power distribution systems relaying
TL;DR: The wavelet transform of a signal consists in measuring the "similarity" between the signal and a set of translated and scaled versions of a "mother wavelet" as discussed by the authors.
Journal ArticleDOI
Distance Protection Based on Travelling Waves
P. A. Crossley,P. G. McLaren +1 more
TL;DR: In this paper, a technique for rapid measurement of the distance to a fault using fault-initiated travelling waves is presented. But the measurement uses the time it takes a given surge to travel from the relaying point to the fault and back.